01 /*
02 * Copyright 2008-2016 the original author or authors.
03 *
04 * Licensed under the Apache License, Version 2.0 (the "License");
05 * you may not use this file except in compliance with the License.
06 * You may obtain a copy of the License at
07 *
08 * http://www.apache.org/licenses/LICENSE-2.0
09 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16 package org.codehaus.griffon.runtime.core.threading;
17
18 import javax.inject.Provider;
19 import java.util.concurrent.ExecutorService;
20 import java.util.concurrent.Executors;
21 import java.util.concurrent.ThreadFactory;
22 import java.util.concurrent.atomic.AtomicInteger;
23
24 /**
25 * @author Andres Almiray
26 * @since 2.2.0
27 */
28 public class DefaultExecutorServiceProvider implements Provider<ExecutorService> {
29 @Override
30 public ExecutorService get() {
31 return Executors.newFixedThreadPool(Runtime.getRuntime().availableProcessors(), new DefaultThreadFactory());
32 }
33
34 private static class DefaultThreadFactory implements ThreadFactory {
35 private static final AtomicInteger poolNumber = new AtomicInteger(1);
36 private final ThreadGroup group;
37 private final AtomicInteger threadNumber = new AtomicInteger(1);
38 private final String namePrefix;
39
40 private DefaultThreadFactory() {
41 SecurityManager s = System.getSecurityManager();
42 group = (s != null) ? s.getThreadGroup() :
43 Thread.currentThread().getThreadGroup();
44 namePrefix = "griffon-pool-" +
45 poolNumber.getAndIncrement() +
46 "-thread-";
47 }
48
49 public Thread newThread(Runnable r) {
50 Thread t = new Thread(group, r, namePrefix + threadNumber.getAndIncrement(), 0);
51 if (t.isDaemon()) t.setDaemon(false);
52 if (t.getPriority() != Thread.NORM_PRIORITY) t.setPriority(Thread.NORM_PRIORITY);
53 return t;
54 }
55 }
56 }
|